Xx x  x x x



"ro ALLfwHoMiT-.MAY CONC-Erm; l

i eintitrh, gtzites/lhetmtt D. J. KXRKMAN AND n, GRAY, or WI-Noi-nsrnn;"LLINoIs Leners Patent No. ouest, and Jun@ 25, 18er.

y IMPROVEMENT `1N 4Proinsias.

. llgetlgthulc tefttrrh tu in tlgest tltttrrs @mit nur mating gmt nf tige snm.

Be it known that w 15D.. KIRKMN and E. H. Gnnjrof Winchester, in theA State of Illinois, have invented certain new und useful mprovements in Subsoil Ploughs; and we hereby declare that the `following is a. true,

full, and exact description of the same, reference being had to the accompanying drawings, and to the letters'` f of reference marked-thereon. In the annexdiirawingy Figure I representsg a. perspective view of my plough. l 4`A represents the lieztnl, bb the handles, and` C the steud'ard, to which the share D is attached. To the handle b on the riglibhnd side is fastened the cleat e, between which and thevplough-hantlle the bur lm is designedy to poss. The bar m is operated :1t its lower end by means of the double-jointed bur it, one elbow of the arm or bar L being mode to 'embrace the b'ar'm, and the other elbow ,being fastened to standard C'. The elbow that` embraces the borm is perforated so os to nlmit of n bolt, fn., passing through it and through corresponing holes v in bar To the lower end of bar m thesubsoil plough'F is firmly secured, :in-d can be set as deep in the earth or afs near the surface as the operator may desire, by adjustingthe bolt`which passes through bur m to any desired. hole.l When the subsoil plough is set Iso-the requireddeptlrit will be helfl immovablyin thon position e and arranged in tlie'marmer herein specified.

by passing the hook z' through e hole in bar in, the hook being made to play on a bolt which contines it to the top of the plouglnbeum. It will be observed that the subsoil plough follows the' furrow of the plough which precedes'it, and thus -breaks up the soil to the required depth.

Having thus described my invention, what I claim, and desire to secure by ,Letters Potent,

1.' The employment of a. subsoil nlough, F, when attached to the ed'ustobl bar m, said bei' being constructed 4 The adjustable bnr m, donblejonted arm 71,aud hook 1'; the whole combined in the manner and for the iiurpose set forth. v Y 'In testimony'that weblaim the foregoing we set our signature in presence of two witnesses.

' D. J. KIRKMAN,

E. H. GRAY.

Witnesses:l v L. C. Semen,V WM. H. l WATT. 

